have xbox boost sales through gamepass and microsoft give nice bag of cash for being there
Not as easy as you think. If Microsoft aren't asking you to be on gamepass, then that means you're asking (begging) them to be on there. When you're the one begging they're in the position to offer you a very low amount.
Consider it like this, you're hungry and somebody's selling sandwiches. You really want a sandwich so you'll pay whatever they're asking. If you're already holding a sandwich though and somebody tries to offer you another sandwich, you'd probably just tell them to take a hike. You don't need anymore sandwiches, and even if you did want a 2nd one you wouldn't be willing to pay as much for it as your 1st sandwich.